1,720,954 research outputs found
Deteksi Kerangka Kapal Menggunakan Data Multibeam Echosounder Untuk Keselamatan Alur Pelayaran (Studi Kasus: Alur Pelayaran Barat Surabaya)
Get PDFTingkat kecelakaan transportasi laut di Indonesia terus meningkat dalam kurun waktu tujuh tahun terakhir. Sejak 2010-2016, terdapat total 54 kasus kecelakaan kapal. Di wilayah Alur Pelayaran Barat Surabaya sendiri, tercatat ada 10 kerangka kapal yang karam di dasar laut. Keberadaan kerangka kapal tersebut dapat membahayakan keselamatan alur pelayaran serta mengganggu efektivitas kinerja distribusi logistik di Indonesia Timur. Salah satu alat yang dapat digunakan untuk mendeteksi lokasi kerangka kapal adalah multibeam echosounder, dengan memanfaatkan prinsip kerja gelombang akustik untuk memperoleh data batimetri serta detail morfologi seabed.
Hasil penelitian menunjukkan, kerangka kapal Tongkang Utama 9 ditemukan telah memasuki area alur pelayaran. Nilai kedalaman kerangka kapal termasuk masih aman untuk dilewati oleh kapal dengan nilai draft hingga 8,3 meter. Namun, lokasinya hanya berjarak 10,05 meter dari as alur pelayaran, sehingga jenis lalu lintas alur pelayaran Alur Pelayaran Barat Surabaya diubah menjadi sistem rute satu arah demi kepentingan bersama.
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The rate of sea transportation accidents in Indonesia are increasing in the last seven years. Since 2010-2016, there are 54 cases of ship accident in total. For Surabaya West Access Channel teritory alone, 10 shipwrecks are reported still left behind in the bottom of the sea. The existence of those shipwreck sites can put the safety of shipping line area in danger and also affecting logistic distribution work rate in East Indonesia. One of the instruments that being used to detecting location of shipwreck is multibeam echosounder, using the working principle of accoustic wave to obtain bathymetry data and seabed’s morphology detail.
From the results, the shipwreck of Tongkang Utama 9 has found already in the middle of shipping line area. The depth values of shipwreck also considered still safe for another ship which has draft up to 8.30 meters. But, Its location only 10.05 meters away from the axis of shipping line, so the traffic system of the shipping line in Surabaya West Access Channel must be changed from two way route into one way route for the greater good
ANALISIS POSISI KERANGKA KAPAL TERHADAP KESELAMATAN ALUR PELAYARAN MENGGUNAKAN DATA MULTIBEAM ECHOSOUNDER (Studi Kasus: Alur Pelayaran Barat Surabaya)
No full textTingkat kecelakaan transportasi laut di Indonesia terus meningkat dalam kurun waktu tujuh tahun terakhir. Sejak 2010-2016, terdapat total 54 kasus kecelakaan kapal di Indonesia. Untuk wilayah Alur Pelayaran Barat Surabaya sendiri, tercatat ada 10 kerangka kapal yang karam di dasar laut. Keberadaan kerangka kapal tersebut dapat membahayakan keselamatan alur pelayaran serta mengganggu efektivitas kinerja distribusi logistik di Indonesia Timur. Salah satu alat yang dapat digunakan untuk mendeteksi keberadaan kerangka kapal adalah multibeam echosounder, dengan memanfaatkan prinsip kerja gelombang akustik untuk memperoleh data batimetri serta detail morfologi seabed.
Hasil penelitian menunjukkan, kerangka kapal dengan nama “Tongkang Utama 9” ditemukan telah berada di dalam wilayah alur pelayaran. Nilai kedalaman kerangka kapal tersebut masih aman bagi kapal (dengan nilai draft hingga 8,3 meter) yang berlayar di atasnya. Namun, lokasi kerangka kapal tersebut hanya berjarak 10 meter dari as alur pelayaran, sehingga jenis lalu lintas alur pelayaran di wilayah APBS harus mengalami perubahan menjadi sistem rute satu arah demi kepentingan bersama
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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